Active Frequency Response Method of Variable Frequency Load for Power Balancing in Microgrid

Frequency fluctuation, which is caused by power imbalance, becomes a more important problem with the rapid and random power fluctuation in high penetration grid. Active frequency response method of variable frequency load for power balancing in microgrid is proposed in this paper. The adaptive filter is applied for obtaining the power imbalance information. Based on the extracted frequency deviation and the virtual P-f control loop, the power electronics device response actively to contribute to the power balancing in microgrid. The experiment results verify the effectiveness of the active frequency response method.